Do the 8mm & 2.5mm dimensions refer to the LENGTH of those screws, or the size of the pentalobe? That is, are there other sizes of pentalobe drivers like there are for hex, phillips and torx? When only one dimension is provided, it is usually the socket/driver size, not the screw length, maybe since the length cannot be seen when the screw is installed.

Can I suggest that you clarify your instructions so folks are confident they are only in need of _one_ pentalobe driver?

Nerdily yours,

Larry (whose iPhone 4S can now get through a day without 6 recharges thanks to ifixit.com ;-)

I wonder if someone can help me - I completed the installation and rebooted from a clone of the original drive on an external USB disk. I tried to clone that back onto the new SSD but that failed and now the new SSD does not appear on the desktop and does not appear in Disk Utility. Its not being recognised when I boot up. Do you have any ideas how I can get it to reappear - I assume the format is lost so is there a way to reformat?

Who is making these assessments of difficulty here?!? I’ve seen some guides that are incredibly involved and require delicate cable rerouting, unseating very fragile logic board connectors, and take over an hour, rated as “easy”, while things like this, that are only 5 steps (and realistically only 4) and require nothing more than unfastening a few screws and popping two large, readily accessible connectors, and can be done even by executives with tiny hands while simultaneously watching videos on Breitbart in under five minutes, are labeled as “moderate”. There is no way the difficulty of this thing can reasonable be called “moderate” unless the only things that qualify as “easy” are “Opening the Lid of Your Mac to Use”, and “How to Type Capital Letters on the MacBook Keyboard”!

Seriously, if the goal of this site is to promote people performing their own repairs, calling trivial procedures like this “moderately difficult” only serves to scare a significant number of otherwise willing and able users off.

Any news on possible 1 GB upgrades? There seems to be one from Transcend, which matches up with my MBA (11”, 6,1) . OWC has been having one for a while, but it seems it has been having some problems, so I’d rather stay away from that.